216332648269 has 2 divisors, whose sum is σ = 216332648270. Its totient is φ = 216332648268.

The previous prime is 216332648251. The next prime is 216332648327. The reversal of 216332648269 is 962846233612.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 213042249225 + 3290399044 = 461565^2 + 57362^2 .

It is a cyclic number.

It is not a de Polignac number, because 216332648269 - 2⁵ = 216332648237 is a prime.

It is a super-4 number, since 4×216332648269⁴ (a number of 46 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (216332648669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108166324134 + 108166324135.

It is an arithmetic number, because the mean of its divisors is an integer number (108166324135).

Almost surely, 2^216332648269 is an apocalyptic number.

It is an amenable number.

216332648269 is a deficient number, since it is larger than the sum of its proper divisors (1).

216332648269 is an equidigital number, since it uses as much as digits as its factorization.

216332648269 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4478976, while the sum is 52.

The spelling of 216332648269 in words is "two hundred sixteen billion, three hundred thirty-two million, six hundred forty-eight thousand, two hundred sixty-nine".